Pipe-cutter.



N0.a57,s94. PATENTBDJUNE25,1907.

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PIPE GUTTER. APPLLOATION FILED JULI-Y 14. 190e.

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CHARLES wAHNsmDLER,

OF EVANSVILLE, INDIANA.

PIPE-CUTTER.

Specification of Letters Patent.

' Patented June 25, 1907.

Application filed July 14,1906. Serial No. 326.210.

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Be it known that I, CHARLES VVAHNsiED- LER., a citizen of the United States, residing at Evansville, county of Vanderburg, and State oi Indiana, have invented certain new and useful Improvements in Pipe-Cu tters, of which the following is a specification.

My invention relates to pipe cutters.

Heretofore rotary cutters have been employed for cutting wrought iron pipes kbut cast iron pipes have had to be severed by using a file, punch or chisel which are tedious, expensive and unsatisfactory methods and tend to split or. crack the pipe.

The object of thepresent invention is the provision of a novel rotary cutter whereby cast iron pipes may be rapidly, easily and inexpensively cut witho ut danger of their being split, and cracked, or otherwise injured.

The invention may be carried out in different ways, the preferred ones of which are set forth fully hereinafter.

In the accompanying drawings z-Figure 1 is a side elevation of the complete invention Fig. 2, a horizontal section; Fig. 3, a crosssection through the cutter; Fig. 4, a crosssection through the cutter where the pins have screw threaded Shanks; and Fig. 5, a cross-section showing another modiiication of the cutter.

The frame 1 has a hook 2, and an integral internally screw-threaded sleeve 3 of ordinary construction. Slidable on a guide 4t, forming part of the frame 1, is a'shde block 5 which has an internal bore 6. A handled screw 7, which is threaded through the sleeve 3, has a smooth end 8 received in the bore 6 and provided with an annular groove 9 into which is received the tip of a set screw 10 carried by the block 5. Between the end of the bore and the end 8 of the screw 7 there is positioned a rubber block or cushion 11, an abutment cage 12 being interposed between l block 11 and end 8.

the holesin the frame provided for its reception, the hub being free to rotate on the journal pin. The cutter pins 15 are then driven home. When it is desired to remove the pins 15 for any purpose, as when they become dull or need replacement, the pin 20 is driven lengthwise, whereupon the groove 19 by engagement with the ends 18, ioosens all the pins 15.

In the modification shown lin Fig. 4, the groove 19 is dispensed with and the pins 15a are provided with screw-threaded shanks 21 screwed into radial sockets in the hub, said pins having flattened parts 22 for the application of a wrench in positioning or removing them. In Fig. 5, the hub itself is provided with integral points 23.

The cutter is used in the well known manner by applying the hook 2 tothe pipe and rotating the entire device, the screw 7 being tightened as the work progresses. The hubs of the cutters rotate and the sharp points of the pins make a ring of dents or pin-pricks in the pipe. The operation may be continued until the pipe is entirely severed or it may be continued only far enough to so weaken the pipe that it may be broken apart where the cut has been made.` Then a slight projection existing on the pipe is struck, the cush ion 11 permits the cutter to yield slightly, which prevents damage to the device.

While I have illustrated and described the invention in connection with a particular type of pipe cutter, I wish it understood that the invention is not thus limited in its uses as the cutters themselves may be used separately in other connections andthe cushioning device is also susceptible of other uses.

Having thus described my invention,what I claim as new and desire to secure by Letters Patent, is

1. A rotary cutter comprising a hub and a plurality of cutter pins having sharpened Aouter ends and provided with tapered Shanks driven in sockets in said hub, in combination with a journal pin passing through the hub and provided with means for loosening the shanks of said pins on movement oi said journal pin.

2. In a pipe cutter, the combination with a frame to engage the pipe, of a slide-block movable on said frame and having an opening or recess, cutting means carried by said slide-block, an adjusting screw having an IOC ICS

elongated grooved end received in the open- `and-screw tip permitting movement of the ading in said slide-block, a set screw carried by justing screw in relation to the set screw. lo the slide-block whose tip is of considerably In testimony whereof, I hereunto ax my less width than the length of the groove aforesignature in presence of two witnesses.

said and received in the said grooved end of CHARLES WAHNSIEDLER.

the screw, and a cushion located in said open- Witnesses:

ing and interposed between said screw end CHARLES WAHNs1EDLER,Jr.,

and the slide-block, said relation of groove l OTTO KLEIN. 

